Finding the Third Proportional to 72,124 and 156,418

Step by Step Solution

1. Step 1: Write the proportion equation
   72,124 : 156,418 = 156,418 : x
2. Step 2: Convert to fraction form
   72,124/156,418 = 156,418/x
3. Step 3: Cross multiply
   72,124x = 156,418 × 156,418
4. Step 4: Simplify right side
   72,124x = 24,466,590,724
5. Step 5: Solve for x
   x = 24,466,590,724/72,124
6. Step 6: Final answer
   x = 339,229.53